Bulldozer blade and scoop mounting



Oct. 12, 1954 $M|TH 2,691,228

. BULLDOZER BLADE AND SCOOP MOUNTING 2 Sheets-Sheet 1 Filed May 2'7, 1952 HV VEZVTOR. Boy/757222271,

ATTD RN EYS 1954 R. F. SMITH 'BULLDUZER BLADE AND SCOOP MOUNTING 2 Sheets-Sheet 2- Filed May 27, 1952 I N VEN TOR. 72 0 f? Srzzz'fi,

ATTCI RN EYS Patented Oct. 12, 1954 UNITED STATES PATENT OFFICE 2,691,228 BULLDOZER BLADE AND SCOOP MOUNTING Roy F. Smith, Silt, 0010. Application May 27, 1952, Serial No. 290,284

3 Claims. 1 This invention relates to earth moving machinery, and in particular a bulldozer blade having mounting clamps secured to the lower edge with a bucket or scoop pivotally mounted on the blade by the clamps and also with the clamps adapted to provide mounting means for points and the like that may be extended from the edge of the blade.

The purpose of this invention is to provide means for readily mounting digging tools or elements and also earth scooping and carrying devices on the lower edge of a bulldozer blade whereby the usefulness of a bulldozer is extended. Machinery or equipment of the bulldozer type is comparatively expensive and the average farm is not in a position to maintain various machines of this type. With this thought in mind this invention contemplates a method of converting a bulldozer blade into a digging implement or into a scoop or bucket whereby a single machine may be adapted for universal use on a farm.

A bulldozer having attachments of this type whereby the bulldozer is adapted for various types of work also converts a small tractor into a machine for universal use.

The object of this invention is, therefore, to provide attachments for a bulldozer whereby points, buckets, scoops, or the like may readily be mounted on the blade thereof.

Another object of the invention is to provide means for converting a bulldozer into a scoop or plow in which the parts are readily removable so that the blade may be used in the conventional manner.

A further object of the invention is to provide an improved plow point and scoop attachment for a bulldozer, which is of a simple and economical construction.

With these and other objects and advantages in view the invention'embodies clamping members, U-shape in cross section and having ears with openings therethrough providing bearings at the ends, a scoop pivotally mounted in the bearings on the clamps, points adapted to be mounted on the blade and fluid actuated cylinders for adjusting the positions of the parts.

Other features and advantages of the invention will appear from the following description taken in connection with the drawings, wherein:

Figure 1 is a longitudinal section through the improved bulldozer blade mounting showing a scoop pivotally mounted on the lower edge of a bulldozer blade and showing cylinders for adjusting the of the blade.

Figure 2 is a plan view of the attachment also showing a scoop mounted on a bulldozer blade.

Figure 3 is a front elevational view of a bulldozer blade with mounting clamps on the lower edge.

Figure 4 is a detail showing the lower corner of a scoop adapted to be mounted on the clamps shown in Fig. 3, with the upper part of the scoop broken away.

Figure 5 is a detail illustrating an end of one of the clamps, with other parts omitted.

Figure 6 is a detail illustrating a modification wherein a shoe is provided on the mounting frame for controlling the elevation of the blade and scoop.

Figure 7 is a front elevational view showing the lower edge of a bulldozer blade in which bolt holes are provided in the blade and illustrating a point mounted on and extended below the lower edge of the blade.

Figure 8 is a sectional plan taken on line 8-8 of Fig. 7 also showing the points on the blade.

Figure 9 is a detail showing an elevational view of one end of a blade with a point mounted thereon.

Figure 10 is a sectional position of the scoop and elevation plan taken on line |0|0 of Fig. 9 illustrating the position of a blade on an end of the plate.

Referring now to the drawings wherein like reference characters denote corresponding parts the improved point or scoop mounting for a bulldozer blade includes a blade l0, clamps II and I2, a scoop having a base l3, rear wall [4 and end walls I5 and I6, cylinders I! and Is for adjusting the position of the scoop and also cylinders 9 and which are mounted on beams 2| and 22, respectively, for controlling the elevation of the scoop and blade.

The back of the blade It is provided with lugs 23 and 24 by which it is mounted on extensions 25 and 26, respectively of the beams 2| and 22, with pins 2'! and 28 and the extensions are secured in position upon the beam with pins 29 and 30 which extend through openings in the extensions and also through spaced openings 3| and 32 in the beams. The opposite ends of the beams 2| and 22 are provided with yokes 33 and 34 which extend over pins 35 and 36 and which are secured in position on the pins with bolts 37 and 38, respectively. It will be understood, however, that the beams may be of other suitable design.

The clamps l l and [2 are similar and, as shown in Fig. 5, each clamp is provided with a slot 39 for receiving the lower edge of the blade [0, ears 40 for receiving bolts M which attach the clamps to the blade in, and lugs 42 which are provided with openings 43 through which pins 44 with which the scoop is pivotally mounted on the blade, extend.

With the clamps mounted on the lower edge of the blade, as illustrated in Figs. 1 and 3, the lower edges of the clamps may be used for scraping or for other purposes and difierent forms of tools may be mounted on the blade of the bulldozer thereby.

In the design shown in Figs. 1 and 4 the scoop is provided with hub suctions 45 and 46 that extend between the lugs 42 of the clamps and through which the pins M extend. The lower edge of the scoop is provided with a notch ll that is positioned over the lugs 42 at the inner ends of the clamps when the scoop is assembled on the blade.

With the parts mounted particularly as illustrated in Fig. 1 arms 48 and 49 on the rear wall Id of the scoop are pivotally connected by pins 59 and to piston rods 52 and 53, respectively, of pistons as indicated by the numeral 54 in the cylinders ii and i8 and with pressure applied, through a tube 55 to the inner end of the cylinders 11 and E8 the upper end of the scoop is shifted outwardly, as indicated by the dotted lines in Fig. 1. The cylinders l? and it are pivotally mounted by pins 56 and 51 on brackets 58 and 59, which are secured, respectively, to the beams 2| and 22.

By applying fluid under pressure through tube 55 to the inner ends of the cylinders l'l and 18 the pistons force the upper end of the scoop outwardly as indicated by the dotted lines in Fig. l and with the position of the valve 63 reversed the i'iuid under pressure is supplied through the tube 6! to the opposite ends of the cylinders whereby the upper end of the scoop or bucket is drawn against the upper edge of the blade ill.

The attachment is also provided with cylinders i9 and 26 that are mounted on the extensions and 2d of the beams 2i and 22, respectively, and, as noted in Fig. 1, the cylinders are secured to the beams with bolts, such as the bolts 62 with the bolts extended through lugs 63 of the cylinders and vertically disposed webs of the beams. Fluid under pressure is supplied to the cylinders from a control valve B l which is connected by tubes 65 to the upper ends of the cylinders and with the fiuid supplied to the cylinders above the pistons 68 in the cylinders, the pistons being stationary or in fixed relation with the ground upon which the caster wheels 63 are positioned, and with the pistons in fixed relation with the ground the cylinders are forced upwardly by the fluid under pressure whereby the beams, blade and scoop are carried upwardly. The wheels 68 are pivotally mounted in the lower ends of yokes 59 which are connected to the pistons 66 with connecting rods or piston rods, as indicated by the numeral 61.

The caster yokes and wheels may be replaced with shoes as indicated by the numeral Hi and the shoes are secured to the lower ends of the connecting rods H with set screws l2, the connecting rods being extended from. cylinders 13, similar to the cylinders l9 and 2e. The cylinders l3 are mounted on the beams with lugs 14 and pins 15.

Figures 1, 8, 9, and 10 illustrate tools that may be mounted on the bulldozer blade, and in Fig. 7 a V-shape point or plow share l6 having wings 4 l1 and 18 is secured with bolts 19 and to the center of the blade, the bolts 19 and 80 being extended through openings provided in the blade for the bolts ll of the clamps H and [2 as shown in Fig. 3.

Points 8| with upwardly extended flanges 82 are adapted to be secured to corners of the blade with bolts 83 extended through bolt holes 84 which are spaced from the ends of the blade and through which the bolts M at the ends of the clamps are also positioned. The points 8| are also provided with flanges 85 at the sides and, as illustrated in Fig. 10 the bulldozer blade l0 may be positioned at an angle whereby the flanges 85 are positioned parallel to the longitudinal axis of the machine. The flange 85 is supported from the flange 82 which supports 86 and it will be understood that the points may be formed of different designs and may be secured to the bulldozer blade by other suitable means.

By this means the bulldozer blade may readily be converted into a plow, digger, scoop or the like and the lower edges of the clamps i l and 52 may be used as wearing plates that may readily be removed and replaced.

The elevation of the scoop is readily adjustable by the cylinders is and 2% whereby a sharp edge 81 on the bottom plate l3 may be used as a scraper and with the scoop filled with soil it may readily be elevated and the position thereof adjusted to facilitate carrying soil from one position to another. As indicated by the dotted lines in Fig. l the scoop may also be actuated to deposit soil or other products therein whereby soil and other products may readily be picked up, carried from one position to another and dumped.

It will be understood that modifications, within the scope of the appended claims, may be made in the design and arrangement of the parts without departing from the spirit of the invention.

What is claimed is:

l. A bulldozer blade mounting comprising a blade, spaced beams on the ends of which the blade is mounted, said blade having spaced openings therethrough and said openings spaced from the lower edge of the blade, mounting elements having scraping lower edges removably attached to said blade, a scoop pivotally mounted on said mounting elements, supporting elements mounted on and depending from said beams, means incorporated in said supporting elements for adjusting the elevation of said supporting elements and blade, and means mounted on said beams and connected to said scoop for adjusting the position of said scoop,

2. In a bulldozer blade mounting, the combination which comprises spaced horizontally disposed beams adapted to be attached at one of the ends thereof to a tractor, a bulldozer blade carried by the extended ends of the beams, clamps, U-shape in cross section and having scraping lower edges, positioned on the lower edge of the blade, a scoop pivotally mounted onsaid clamps, hydraulic jacks mounted on the beam and attached to the upper end of the scoop for adjusting the position of the scoop, supporting elements mounted on and depending from said beams, and means for connecting the hydraulic jacks and supporting elements to a source of fluid under pressure for actuating the hydraulic jacks and supporting elements.

3. In a bulldozer blade mounting, the combination which comprises spaced horizontally disposed beams, adapted to be mounted, at one of the ends thereof on a tractor; a bulldozer blade carried by extended ends of the beams, said bulldozer blade having bolt holes spaced from the lower edge thereof, clamps having blade receiving slots extended downwardly from upper edges thereof positioned on the lower edge of the blade, bolts extended through sections of the clamps and openings of the blade, a scoop pivotally mounted on said clamps, vertically positioned hydraulic jacks mounted on said beams, ground engaging elements carried by said jacks whereby the elevation of the blade is adjustable, and hydraulic jacks attached at one of the ends thereof to said beams, and at the opposite end to the scoop for adjusting the position of the scoop.

Number Number Name Date McHale Aug. 16, 1932 Mork Dec. 1, 1942 Norris June 13, 1950 Von Carnop July 18, 1950 FOREIGN PATENTS Country Date Great Britain Oct. 30, 1947 

